RE: hard shift when cold or tow/haul mode

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Chevrolet Forum >> Chevy Trucks, Vans & SUV's >> Silverado >> RE: hard shift when cold or tow/haul mode

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RE: hard shift when cold or tow/haul mode - 4/25/2008 7:05:07 AM    mroakdale   Posts: 4 Joined: 3/2/2008 Status: offline There are no check engine light or codes stored (in reply to ZX1100F1) Post #: 11

RE: hard shift when cold or tow/haul mode - 4/26/2008 9:06:02 AM    mroakdale   Posts: 4 Joined: 3/2/2008 Status: offline Ok just got back from dealer they updated pcm with new software which included harsh shift 1-2 program, but it did not seem to change anything on my truck. any other ideas? (in reply to mroakdale) Post #: 12

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